Hello
i purchased brv manual. I did not change the tires as the salesman told me that the original ones were fine.
i put rexene covering on the carpet, and then heavy mats and also heavy mat brv genuine as sold by them in the trunk. But noise is still there. I have heard that you have to cover the doors with special matting to reduce the noise.
by the way when driving at 120 the noise of the engine is quite a bit at 3100 rpm and only when I use the 6th gear does the engine noise go down at 2600 rpm.
anyway the only problem i have in brv is while reversing even with back camera.
my car doesn't have the original alloy rims and I also haven't installed them as they are heavier than the simple ones. The lighter your rims and tyres are the better the car will behave and you will get better mileage also
Also there isnt much space in the wheel area so it is better to stick to the original size